baber/WOPTO huggingface dataset:
Patent GB-150892-A (GB)
Title: Improvements in elastically centred bearings of machines, such as cream separators, for separating liquids of different specific gravities, and in such bearings of othercentrifugal machines
IPC: B04B9/12
Filed: 1919-08-18
Abstract: 150,892. Woolsley Sheep Shearing Machine Co., Walton, J. T., and Picken, G. Aug, 18, 1919. Spring supports.-In an elastic bearing of the kind described in Specification 24674/05 for the spindles of cream separators &c., supported by a number of separate bow springs C, Fig. 2, an annular groove b receives the cranked ends c<1> of the springs which are retained by a split ring D, the other ends of the springs being retained in an annular recess b<1> formed by a cup b<2> shrunk or sweated on to the carrier B. The recess b<1> permits end movement to allow the springs to yield laterally under pressure. The bow-shaped portions c of the springs engage in an annular groove in the wall (not shown). Radial partitions b<5> in the recess b<1>, and radial projections b<6> formed on a flange b<7> integral with the carrier B, space the springs. The springs are very narrow in proportion to their length, and touch, or are very close together, at their ends, allowing a large number of springs, and obviating the need for adjusting-means. The springs may be flat, or may be formed of wire after the manner of a hairpin, forming two springs side by side, and connected at one end.
Patent GB-1223699-A (GB)
Title: Improvements in revolving doors
Inventor: ROY JAMES FREDERIC
IPC: E06B3/90
Filed: 1968-04-29
Abstract: 1,223,699. Revolving doors. BRITISH EUROPEAN AIRWAYS CORP. 8 July, 1969 [29 April, 1968], No. 20254/68. Heading E1J. A revolving door comprises an inner shell 3 divided by a partition 5 into compartments 6, 7 each having an opening 19, 20 in the wall of the shell, and an outer coaxial shell 1 having an opening, the shells being rotatable about the same axis. In Fig. 4a the shells each have two diametrically opposite openings. The outer shell 1 rotates at half the speed and in the opposite direction to the inner shell 3. Thus manual rotation of shell 3 clockwise allows successive communication of compartment 6 with channel 24 and gate 25, and successive communication of compartment 7 with the two portions of channel 23 on opposite sides of gate 25. In Figs. 5a-5d (not shown) the shells rotate at the same speed in opposite directions. The shells may also rotate at different speeds in the same direction.
Patent GB-750578-A (GB)
Title: Improvements in or relating to electric pulse coding arrangements
Inventor: TREADWELL CYRIL GORDON
IPC: B41L13/18
Filed: 1954-07-12
Abstract: 750,578. Pulse code modulation circuits. STANDARD TELEPHONES & CABLES, Ltd. July 12, 1954, No. 20296/54. Class 40 (5). For coding amplitude-modulated signal sample pulses, in the cyclic permutation binary code, they are applied to an amplitude-doubling amplifier through an autotransformer winding, the centre tap of which is connected through a normally-blocked rectifier to a source of fixed potential, so that for pulses of increasing amplitude, when said tap reaches the fixed potential it is held there by the unblocked rectifier and the voltage applied to the amplifier thereafter decreases. The output pulse is either returned to the input, to code the second digit pulse and so on, or the required number of coding circuits are connected in cascade, a digit pulse being generated when the amplitude of an input pulse equals or exceeds the fixed potential. The circuit described has three cathode-follower stages 1, 2, 3 each having a gain of unity and the positive pulses whose amplitude is to be coded are fed from terminal 9 to the grid of stage 1, which is coupled through the winding of an autotransformer 13 to stage 2. If the pulse is of greater amplitude than the potential of the fixed bias source 29, rectifier 31 connected to the centre tap of coil 13 conducts and the grid of stage 2 receives a pulse of amplitude below the fixed bias by the amount by which the input pulse exceeds this bias, due to autotransformer action. At the same time, rectifier 34 conducts and the pulse is fed to the output terminal 36 to form a code digit pulse. If the input pulse amplitude is less than the fixed bias potential, the pulse is fed unchanged to stage 2 and no code pulse is generated. In either case, the pulse output of stage 2 is passed to stage 3 by way of a voltage-doubling autotransformer 8. In order to continue the coding process the doubled pulse from stage 3 is fed back to the grid of stage 1 through a delay network 26 and continues to circulate until the required number of digits have been generated. A negative terminating pulse is then applied from terminal 22 to block the rectifier 17 between the transformer 8 and grid of stage 3. Alternatively, the output of stage 3 may be passed to further similar coding stages, the feedback through delay network 26 being omitted, Fig. 3 (not shown). Specification 750,577 is referred to.
Patent GB-275269-A (GB)
Title: Improvements in and relating to hacksaws
IPC: B23D51/12
Filed: 1927-08-02
Abstract: . 275,269. Hanning, C. R. July 30, 1926, [Convention date]. Saws.-A hacksaw blade is tightened by means of a lever pivoted to the lower end of the handle to swing up against the inner face of the handle and adapted to be grasped together with the handle when the saw is used. The frame 10 is of J-shape, the bent portion having grip members 15 secured thereto by screws 16 and the short part 12 parallel with the back 10 being fitted with a socket 13 having a non-circular opening 14 in which is guided a slide bar 25 with pins 26, 27 to engage one end of the blade 18. The slide bar is slotted and carries a roller 29 engaged by a cam finger 32 on a lever 31 pivoted to the frame at 30. The other end of the blade is engaged by a pin 23 or 24 on an anchor arm 17 which is pivoted to a clip 20 and has a gripping projection 21. When the lever 31 is moved towards the handle the cam finger 32 actuates the slide bar 25 and tensions the saw blade; the cam finger has a flat part 33 and the pivot 30 is above the line of pull of the saw blade to resist release of the tension. The hand grips 15 are spaced apart to receive the lever 31 when in tightening position, which lever may be formed as a loop or otherwise.
Patent GB-148454-A (GB)
Title: Improved process for drying or hardening the surface of patent leather
IPC: C14C11/00
Filed: 1920-07-10
Abstract: 148,454. Stoeckly, J. J. April 13, 1918. [Convention date]. Coating-processes.-Enamelled or patent leather ia hardened during the drying process, either under the action of heat or of ultra-violet rays, or of a combination of these, by submitting the varnished surface to the action of alcohols in liquid or vaporized state. Ethyl, methyl, propyl, butyl, amyl, or other alcohols may be used. A better result is obtained by causing alhalis, such as potassium, sodium, or ammonium hydroxides dissolved in alcohol, to act on the patent leather. The. drying process is stated to be accelerated by these means.
Patent GB-639865-A (GB)
Title: Improvements in or relating to variable-ratio power transmission mechanism
Inventor: HOBBS HOWARD FREDERICK
Filed: 1947-07-29
Abstract: 639,865. Controlling change-speed gearing. HOBBS TRANSMISSION, Ltd. July 29, 1947, No. 20424. [Class 80 (ii)] In a motor vehicle transmission gearing, overtravel of an accelerator 18 or other power source speed control device causes permanent downshift in one or more speed ratios by acting on a linkwork or cable connection between a gear lever 11 and a gear change member 1. As shown, over-travel of the accelerator 18 acts to turn a bell-crank 14 about a fixed pivot 15 and so move a normally stationary fulcrum point 13 in the linkage 5, 7, 6, 8, 9, 10 between the rotary rod 1 and the lever 11. Ratchet teeth 29 on a movable quadrant 4 on the rod 1 co-act with a spring-pressed detent 2, and similar teeth 27 on a fixed quadrant 12 co-act with a projection 110 on the lever 11, which may be of spring steel, both sets of teeth defining notches corresponding to reverse, neutral and four increasing forward speed ratios, in that order, with the positions shown corresponding to engagement of the highest speed ratio. The ratchets are so directed that, upon movement of the point 13 due to accelerator over-travel, the quadrant 4 is actuated through one notch to engage the next lower speed ratio whilst the lever 11 is prevented from moving. Subsequent release of the pedal 18, however, allows the lever 11 to follow the gear change while preventing reverse movement of the quadrant 4. A spring 24 allows over-travel of the pedal 18 independently of the linkage 20 ... 22 of the throttle 19. Normal gear changes in either direction may be effected directly from the lever 11, the bell-crank 14 being held stationary against a stop 16 by a spring 17. The tooth profiles of the notches corresponding to the highest speed ratio, which may be an overdrive, may be modified so that the lever 11 does not move but the quadrant 4 is pulled back to re-engage the highest speed ratio when over-travel ceases. A similar arrangement may, according to the Provisional Specification, be applied to the first. speed ratio notches to allow transmission slip in neutral upon meeting excessive road resistance in this ratio. Conversely, the tooth profiles of the notches corresponding to first speed ratio and neutral may be modified so that accelerator over-travel does not change gear but merely moves the gear lever, or, according to the Provisional Specification, this may be achieved by stops. The member 1 may operate a valve element controlling hydraulically-actuated ratio changing means. In a modification, Fig. 4 (not shown), the members 5, 9 are connected by the inner push-pull wire of a flexible cable the outer casing of which has one end fixed and the other, which is normally spring-retained against an abutment, acted on by the bell-crank 14. Specifications 596,908, 602,318, 619,226, 619,234, 624,636, 628,499, 637,236 and 637,251 are referred to.
Patent GB-1276892-A (GB)
Title: Reflector
IPC: H03H11/12
Filed: 1969-05-27
Abstract: 1276892 Impedance converters PURDUE RESEARCH FOUNDATION 27 May 1969 [27 May 1968] 20453/69 Heading H3U [Also in Division G4] A non-linear circuit element, e.g. an inductor or capacitor, is realized by means of a linear active network comprising three elements of the same kind (R, L or C) connected in TT or T configuration with a controlled current or voltage source of constant proportionality K, one of the elements being negative and both the constant K and the circuit elements being proportional to respective trigonometrical functions of an angle # whereby the non-linear characteristic of an element of the same kind as the circuit elements, when connected across one port of the network, is reflected through # degrees as seen at the other port. The effect of the network is to transform the I-V, #-I or Q-V characteristic of a non-linear resistor, inductor or capacitor respectively by reflecting the characteristic about a line passing through the origin at an arbitrary angle # whereby a new kind of non- linear element is realized. The three columns of Fig. 1A each show two networks for realizing respectively non-linear resistances, inductances and capacitances, the diamond-shaped elements having  signs or arrow signs being respectively voltage or current sources. The angle # is chosen between 0 and 90 degrees and the transformation performed by the network is defined by the equations: The non-linear element whose characteristic is to be transformed (not shown in the Figure) is connected across one port of the network and the desired transformed characteristic appears across the other. The Specification also gives a table showing realizations for 90 < # < 180 degrees. The current and voltage sources may be operational amplifiers and negative impedance converters used in known network configuration and the Specification gives a detailed example.
Patent GB-201036-A (GB)
Title: Improvements in and relating to tooth brushes
IPC: A61C17/24
Filed: 1922-07-26
Abstract: 201,036. Waite, H. J., and Edey, W. H. July 26, 1922. Boxes combined with brushes; boxes for enclosing articles having parts extending out through box.-In a rotary toothbrush driven by rack and pinion mechanism, the handle 20 of the brush is hollow and is adapted to hold the parts of the brush when not in use. One side of the handle is formed with an open slot and the opposite side with a hole to form bearings for the spindle of the pinion 18. A slot is formed below the base of the handle to receive the end of a guard for protecting the cheek from contact with the bristles.
Patent GB-354947-A (GB)
Title: Improvements in or relating to machines for welding
IPC: B23K11/087
Filed: 1930-07-07
Abstract: 354,947. Magnetic work - holders. BUDD MANUFACTURING CO., E. G., 2500, Hunting Park Avenue, Philadelphia, U.S.A.-(Assignees of Walmsley, G. ; 1348, Englewood Street, Fox Chase, Philadelphia, U.S.A.) July 7, 1930, No. 20527. Convention date, Aug. 1, 1929. [Class 60.] An electromagnetic work clamp consisting of a magnet and a movable armature between which the work is clamped is combined with each of the welding dies of an electric welding machine. The sheets 10, 11 to be welded are inserted over dies 13 and magnetic beds 17 secured to movable frames 14. The beds are recessed to receive magnetizing windings 22, covered by continuous bands of conducting material 23, such as copper, to set up by induction a counterelectromotive force. The upper surface of the beds may be flush with that of the dies, or, as shown, a gap may be provided intermediately between the die and insert 45. The armatures 24 consist of magnetic bodies provided with inserts 29 of a material such as high carbon tool steel, having a greater coefficient of friction with the work than the main bodies and leaving an intermediate air gap 28. The armatures rest on the work by gravity and are connected by screw-eyes 30 to a fluid-pressure motor at the centre to raise them into co-operative position and also at the ends to counterweights to assist the motor. The magnetizing windings are connected by either of the switches 36, 37 to the power mains 37<1>, the circuit through the switch 36 being for applying an energizing current and the circuit through the switch 37 being in the reverse direction and acting through a resistance for demagnetizing the clamp sufficiently to free the armatures and work of residual magnetism. The switch 36 is closed by a coil 39 energized by pressing a pushbutton 40 and maintained through a contact 42. After welding, the coil 39 is de-energized by pressing a. pushbutton 41 to open theswitch 36. The switch 37 is inserted by pressing pushbutton 44.
Patent GB-603588-A (GB)
Title: Improvements in or relating to the regulation of the water level in steam generators
IPC: F22D5/10
Filed: 1945-08-10
Abstract: 603,588. Fluid-pressure servomotor-control systems. SULZER FRERES SOC. ANON. Aug. 10, 1945, No. 20531. Convention. date, Sept. 9, 1944. [Class 135] [Also in Group XIII] A fluid-pressure servomotor-control system for a method of regulating the water level 8 in a water tube boiler of the type having an upper drum 7 and an economizer 14, comprises a throttle 33 situated in the steam exit line 39, the pressure on each side of the throttle being applied respectively to opposite sides of a diaphragm 27 connected to a piston 26 controlling communication between an oil pressure line 21 and oil inlet and outlet lines 24 and 25 respectively. Hence an increase in the quantity of steam for draw-off purposes in line 39 lowers the pressure in the chamber below diaphragm 27 which descends and causes piston 26 to do the same, whereby pipe 21 is put into communication with oil outlet pipe 25, and allows a spring 18 to force piston 19 to the right to open a valve 13 on the supply line 11 to the economizer. The increased flow in this pipe causes the increased pressure across a throttle 36 to actuate a diaphragm 28 to cause piston 26 to take up an equilibrium position. The direct supply to the drum via pipe 6 is controlled by a valve 4 operated by a float 10 in the drum. In a modification, the valve 4 is additionally operated by a fluid-pressure servomotor system similar to that operating valve 13. The valves 4 and 13 may be actuated by pneumatic or electrical means, and the respective pistons in the servomotor systems may be influenced by the intensity of the fire or the quantity of combustion air or flue gases.
Patent GB-1385777-A (GB)
Title: Magnetic iron oxides and a process for their production
IPC: C09C1/24
Filed: 1972-05-03
Abstract: 1385777 Ferromagnetic iron oxide BAYER AG 3 May 1972 [6 May 1971] 20560/72 Heading ClA [Also in Division C3] Ferromagnetic γ-Fe 2 O 3  is prepared by initially forming needle-shaped α-FeO(OH) pigments by precipitation and oxidation of a suspension containing a Fe (II) salt (e.g. FeSO 4 ), PO 4 <SP>1</SP> ions and seeds of α-FeO(OH) formed by precipitation and oxidation of a solution containing a Fe (II) salt and optionally PO 4 <SP>1</SP> ions, and subsequently dehydrating the α-FeO(OH) pigments to α-Fe 2 O 3 , optionally tempering, reducing to Fe 3 O 4  and then finally reoxidizing to γ-Fe 2 O 3 . The preparation agent may be NaOH, Na 2 CO 3 , NH 3 , metallic Fe or urotropin, the preparation preferably being carried out in acid conditions. The oxidizing agent may be air Cl 2 , ClO 3 <SP>1</SP>, NO 3 <SP>1</SP> or nitrobenzene. The PO 4 <SP>1</SP> ions may be added as phosphoric acids or their water-soluble salts; preferably in an amount to give 0À1-4% by wt. P 2 O 5  in the α-FeO(OH) end product; and either prior to or during seed or pigment formation. The rate of α-FeO(OH) pigment formation may be 0À5-15 g./l./hr at a temp. of 40-95‹ C. The α-FeO(OH) obtained may then be filtered, washed, mashed dispersed refiltered, dried and then dehydrated at 400‹ C', to obtain the α - Fe 2 O 3 ; tempered at 400-900‹ C. for 15-60 mins.; reduced to Fe 3 O 4  at 400-440‹ C. in an atmosphere of H 2  and steam, cooled in N 2  at 250-300‹ C., and then re-oxidized at 290‹ C. to form γ-Fe 2 O 3 .
Patent GB-964598-A (GB)
Title: Production of soda ash
IPC: C01D7/35
Filed: 1961-06-07
Abstract: <PICT:0964598/C1/1> Anhydrous sodium carbonate containing little or no dust may be produced by forming a slurry by adding hot, light ash (sodium carbonate made by calcining crude ammonia soda) to an aqueous solution at 95-110 DEG C., saturated with respect to sodium carbonate and which contains 5-15% sodium hydroxide, the light soda ash being at a temperature of not more than 6 DEG C. below that of the solution; the slurry is then cooled to 90-105 DEG C. but not less than 2 DEG C. and not more than 7 DEG C. below the transition of anhydrous soda ash to its monohydrate in the presence of caustic soda (see Figure) and held at this temperature until the transition to monohydrate is complete when it is separated from the slurry, dried and calcined to dense soda ash.  The sodium carbonate monohydrate crystals produced by the above process have large boat-shaped crystal structures and contain substantially no crystal clusters, aggregate material or lumps.  These crystals when calcined produce anhydrous sodium carbonate containing little or no dust.  The above process may be conducted in a cyclic fashion, hot, light ash slurry as described above being continuously prepared in a first tank whence it is continuously withdrawn to a second tank where it is cooled to below the transition temperature of anhydrous sodium carbonate to its monohydrate. A portion of the slurry is continuously removed from the second tank and filtered to obtain the sodium carbonate monohydrate, the mother liquor being used to prepare the first slurry.
Patent GB-428173-A (GB)
Title: Improvements in and relating to springing arrangements for motor cars and the like
IPC: H02K1/04
Filed: 1934-07-13
Abstract: 428,173. Vehicle spring-suspensions. PORSCHE GES., DR. ING. H.C. F., 24, Kronenstrasse, Stuttgart, Germany. July 13, 1934, Nos. 20648 and 20649. Convention dates, July 13, 1933 and March 13, 1934. [Class 108 (ii)] In independent spring suspensions for the wheels of motor &c. vehicles of the kind in which the wheels are supported at the ends of swinging links 5, the journals or shafts 4 of the links are journalled in the frame 9 itself and engage rubber bars 1 which, as the links 5 oscillate, are stressed in torsion or shear. In the construction shown in Fig. 1, each shaft 4 rotates within a casing 7 fixed to a longitudinal frame member 9 and is directly connected by a socket 2 to the outer end of the rubber bar 1, the inner end of which is secured to a second socket 3 adapted for adjustment in a surrounding transverse member or casing 12 by means of a key 11. Oscillations of the links 5 are heavily damped by the friction between the rubber bars and the casing 12, such friction being varied as desired by movement of the key 11. To secure the link 5 to the shaft 4, these parts are formed with co-operating corrugated surfaces 15 and a connecting pin 16 is inserted. Preferably two supporting links, one arranged above the other, to form a parallelogram linkage, are provided for each wheel. Several other constructions are described in which the rubber is in the form of a hollow sleeve through which the shaft 4 extends for attachment to the inner end of the sleeve, as in the arrangement shown in Fig. 4, in which the compression of the rubber and its frictional resistance with the casing 12 is adjusted by a nut 16<a>. In another modification of this character the rubber sleeve, in an initial state of torsion, is inserted between an inner movable and an outer fixed concentric sleeve. The ends of the rubber sleeve may be enclosed in an oiltight manner to prevent deterioration and may be made in a number of portions assembled end to end, while roller bearings may be interposed between the shaft 4 and casing 7.
Patent GB-136271-A (GB)
Title: Improvements in Stud-and-socket Fastenings.
Inventor: BUTLER JESSIE JANET
IPC: A44B17/00
Filed: 1918-12-12
Abstract: 136,271. Butler, J. J. Dec. 12, 1918. No Patent granted (Sealing fee not paid). Stud-and-socket fastenings.-Relates to dress and like fastenings of the type wherein the socket member is shaped to allow the stud to be inserted or withdrawn in a sideways direction and is provided with a spring which bears upon the head of the stud and retains it in engagement with the edge of the shaped socket against withdrawal by a lateral pull. The stud D, which is inserted in the open-ended slot in the socket A, is formed with a lip d held in engagement with a lip a on the edge of the slot by the spring B.